Sendmail DNS strangeness

[Glen Barber]

Chris Rees said: 
> For about four days now, I've had these emails stuck in my mailqueue,
> and I don't understand what the problem is. Sure it says it has a DNS
> failure, but what does it mean?
> 
> 
> Jan 29 16:03:19 amnesiac sm-mta[38492]: n0RM2Hlj021695: to=<******>,
> ctladdr=<xxxx at amnesiac.xxxx> (80/80), delay=1+18:01:02,
> xdelay=00:00:14, mailer=esmtp, pri=8221553,
> relay=mail2.ukrhosting.com. [91.196.0.5], dsn=4.3.0, stat=Deferred:
> 451 DNS temporary failure (#4.3.0)
> 
> 

Do you have 'hostname' set in rc.conf?  'amnesiac' is the default
hostname if you haven't set one.

Also, do you have your hostname in /etc/hosts ?

-- 
Glen Barber